Improved mode op casting plqughshaees



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' J'oNA'ri-IAN HUN'roN, OE EAcKENsAeK, NEW JEEsEY,`Ass1eNoE-To EIM- SELFAND L. EREELAND, on SAME PLAGE.

Letters Patent No. 75,919, elated Jl/[arch 24, 1868.

IMPROVED MODE 0F CASTING PIJOiiJrElSBARES.l

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T() ALL lmVIlOM 1T MAY CONCERN1` p De it known that I, JONATHAN HUNTON,of Hackensack, in the county of Bergen, and State of New Jersey, haveinvented a new and useful Improvement in Casting Ploughshares, and thatthe following description, taken in connection with the accompany-ingdrawings, hereinafter referred te, forms a full and exactI specificationof the same, wherein I have set forth the nature and principles of mysaid improvement7 by which my invention may be distinguished from allothers of a similar class, together with such parts as I claim anddesire to have secured to moby Letters Patent. t

This invention is'desig'ned to admit of casting, with an iron mould,those ploughshares which are provided t with a lng or projection to fitinto a staple or socket on the mould-board, and which are also providedwith ai p 4pendent land-side projection, having an oblique positionrelatively with the upper surface of the share. Shares of this kind havehitherto been cast in sand-moulds, for the reason that they could not,be drawn from cast-iron ones, and consequently the advantage of a chillhas hitherto been lostl'in casting them.

My invention consists injproviding the cast-iron chill-plate withdetachable lportions7 arranged -in such u manner that said portions,after the casting is made, may be removed, and the casting readily takenfromthe mould. In the accompanying sheet of drawings i Figure 1 is a.plan or top view of tho chill-plate of the mould. Figure 2, a section ofthe same, taken in the line a: x, tig. 1. Figure S, a section of thevsame, taken in the line y y, g. 1. Figure 4, a section of the sam, takenin the vline z z, iig. 1. Similar letters of reference indicate likeparts. i p :"3 A represents the east-iron chill-plate, which is et' theusual form, corresponding to the shape of the bottom er under surface ofthe share to bo cast, the top of the mould being'otl sand, as the chillis required for the under surface of` the share. The portion B of this'chill-plate is made or cast separate from the other or main part, so'that it may be removed when required, and this part B is atone side ofthe groove or depression inthe chill-plate, in which the pendentlandsidc a of the share C is cast, as will be fully understood byreferring to lig. 4. This pendent landside has an oblique positionrelatively with the top of the share, (see g. 4,) sulh- .ciently so toprevent the casting being drawn from a cast-iron mould if the latterwere all in one piece, but by having the part B removable or detachable,and drawing it out backward from the chill-plate, the casting,` may bereadily1 drawn from the former. The chill-plate A has an indent-ure ordepression, b, in it, in which a cover, l p d, is fitted lhis cover-doesvnot-fully` ll up the depression b. A space is allowed to receive themelted metal and'forrn a lug or projection, c, as shown clearly in tig.2. This lug or projection lits into'a socket on the mould-board, andholds the outer end or part oi' the share in place. It answers in lieuoi' a bolt. Itwill be seen that this lug could not he cast with achill-plate 'without the cover D, the removal ci' which admits of the\\ithdra\val of the casting. v f

Having thus described my invention, I claim as new, and desire to securelJy"Lette1's Patent- V' lhe employment oryuse, with the chillplatc A,for casting plonghshares, of the removable or detachable parts ll D,either or both, varranged substantially as and for the purpose setforth.

` t JONATHAN nUNToN.

Witnesscs HENRY Baaren p NienoLAs C. DEMAREST.

